QA

Quick Answer: How To Replace Mower Blade

Is it hard to replace a lawn mower blade?

Blades wear out with use and need to be changed occasionally to make your mower more efficient. You’ll keep your lawn healthier and you’ll need to mow less frequently with sharp, clean blades. Replacing them is an easy project that won’t take up much time, as long as you approach it correctly.

Which way do you turn the bolt to remove a lawn mower blade?

To remove the blade, you must turn the blade’s retaining bolt to the left, or counterclockwise. Before undoing the blade, tip the mower on its side with the engine air cleaner facing up and block the blade with a piece of wood so it can’t turn.

Which side of the lawn mower blade is up?

The wings of the lawn mower blade will be oriented up toward the mower deck and any writing on the blade will likely be facing away from the deck. If the blade bolt comes with a washer, its concave side will be facing the blade.

How often should you replace lawn mower blades?

A good rule of thumb for the average homeowner is to replace your mower blades annually. You may also think about replacing them if they become damaged. Dig up that product manual if you want a more clear-cut answer. Always make sure to take protective measures whenever sharpening your mower blades at home.

How much is a new lawn mower blade?

Zero-turn lawn mower blades cost between $12 and $31, depending on the type and brand. Riding lawn mower blades cost between $10 and $40.

Are mower blade bolts reverse threaded?

Most lawnmower blade nuts are reverse-threaded in order to secure the blade on the drive shaft of the engine. This ensures that the blade’s rotation does not loosen the nut. However, not all blades use a reverse-threaded nut to secure them to the engine’s drive shaft.

What size wrench Do I need to remove a lawn mower blade?

Dismount the mower deck from the lawn tractor to replace worn-out mower blades. Changing the mower deck’s three blades requires a 1 1/8-inch socket, box or open-end wrench for hex nuts, a block of wood and a set of new blades.

What size is the nut on a lawn mower blade?

What size are the tractor cutting blade retainer nuts and what direction should they be turned? The retainer nut on most of our riding mower blades are a 5/8″ thread diameter. This sized thread diameter nut normally requires a 15/16″ wrench or socket tool in order to remove/install.

What happens if mower blade is upside down?

Mower blades have a cutting edge at each end. It is common to install a blade upside down. When this happens, the lawn mower will not cut correctly, or it could damage the mower.

Why does my lawn mower leave a line of uncut grass?

Rows or streaks of uncut grass in your lawn may be the result of your lawnmower’s cutting blades being dull or otherwise damaged. Dull blades are the result of normal wear and tear from mowing. Occasionally, one or both blades become warped, curled or nicked. In any one of those cases, it’s best to replace the blades.

Can you change mower blades without removing deck?

By all means no. And fortunately, it is possible to change mower blades without taking out the dock. You see, the blades are found at the bottom part of the mower. So, if you have a jack or a tool that can lift the riding mower just enough to expose the blade.

Do you have to sharpen replacement mower blades?

As mentioned above, brand new lawn mower blades do not need to be sharpened because they are always sharpened during manufacturing. However, lawn mower blades do generally need to be sharpened at the beginning of each new season.

Do you need to sharpen lawn mower blades?

It’s recommended that you sharpen the blade of your lawnmower at least once a year. Dull blades will roughly rip through grass, leaving behind raggedly torn tips on the ends of the individual grass blades. And that can cause the grass to turn brown and leave your lawn more susceptible to disease and pests.

Can I sharpen my own lawn mower blade?

The fastest way to sharpen a lawnmower blade is with a bench grinder. Wearing protective eyewear, earplugs, and work gloves, grind the edge of the blade against the spinning wheel. It’ll be loud and you’ll see sparks, but you’ll be able to sharpen the blade in a matter of a few minutes.

Are lawn mower blade right or left hand thread?

The overwhelming majority of mower blade retainers (almost all are bolts) are normal right hand thread. The best indicator that the method of retaining the blade(s) might deviate from the norm would be found in the side which the grass is discharged from the mower deck.

Do all mower blades turn counterclockwise?

Most lawn mower blades rotate in a clockwise direction (counter-clockwise when viewed from below), and as such have the cutting edge on the right side. If you are unsure of how your mower rotates, check the position of the discharge chute; if it is on the right side angled back, the blade turns clockwise.

How sharp should a mower blade be?

Mower blades should be aggressively sharp, but not as sharp as a razor’s edge. You should be able to touch the blade with your hand without getting cut. Contrary to popular belief, a lawn mower blade with a razor sharp edge will not cut grass better.

What is the torque on a lawn mower blade?

Walk behind mower blades should be installed between 38 and 50 foot pounds of torque. Riding mower blades should be installed between 70 and 90 foot pounds of torque.

What size nut holds John Deere mower blades?

John Deere Blade Nut Specification Thread Size 12.000 MM Locking Element Type D Material Grade 8 Finish B.

What size is a Husqvarna blade bolt?

1 x 1 x 1 inches Product Dimensions 1 x 1 x 1 inches Item model number 532193003 Customer Reviews 4.6 out of 5 stars 200 ratings 4.6 out of 5 stars.